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Finding the Third Proportional to 879.88 and 1,373.25

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Solution

The third proportional to 879.88 and 1,373.25 is: 2,143.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    879.88 : 1,373.25 = 1,373.25 : x
  2. Step 2: Convert to fraction form
    879.88/1,373.25 = 1,373.25/x
  3. Step 3: Cross multiply
    879.88x = 1,373.25 × 1,373.25
  4. Step 4: Simplify right side
    879.88x = 1,885,815.56
  5. Step 5: Solve for x
    x = 1,885,815.56/879.88
  6. Step 6: Final answer
    x = 2,143.28

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.